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Proceedings Paper

Design, prototypes, and performance of an image slicer system for integral field spectroscopy
Author(s): Christophe Bonneville; Eric Prieto; Pierre Ferruit; Francois Henault; Jean-Pierre Lemonnier; Florence Prost; Roland Bacon; Oliver Le Fevre
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Paper Abstract

A research and development activity on an Image Slicer System for Integral Field Spectroscopy is conducted with possible applications on future instrumentation for major ground-based (VLT second-generation instruments) and space (NGST, SNAP) observatories. These instruments need high-photometric accuracy, compactness and will possibly work under cryogenic environment, while multi-integral field units may require mass production. Several prototypes have been manufactured since March 2000. This paper provides an overview of the difficulties and limits of the design for different applications, and will describe technology developments and performance evaluation. In particular, the assembly of Zerodur micro-optical elements required an original method of assembly using high precision molecular adhesion, in order to comply with optical tolerances. Following the exact characteristics of the optical elements, diffraction and straylight analyses have been performed in the NIR range. It was found that diffraction effects due to the image slicer induce energy losses less than a few percents and do not induce any crosstalk between pseudo-slits. With a good baffling, scatter can be controlled to minimize the background increase to less than 10-4 times the incident flux.

Paper Details

Date Published: 30 January 2003
PDF: 12 pages
Proc. SPIE 4842, Specialized Optical Developments in Astronomy, (30 January 2003); doi: 10.1117/12.457356
Show Author Affiliations
Christophe Bonneville, Lab. d'Astrophysique de Marseille (France)
Eric Prieto, Lab. d'Astrophysique de Marseille (France)
Pierre Ferruit, Ctr. de Recherche Astronomique de Lyon (France)
Francois Henault, Ctr. de Recherche Astronomique de Lyon (France)
Jean-Pierre Lemonnier, Ctr. de Recherche Astronomique de Lyon (France)
Florence Prost, Ctr. de Recherche Astronomique de Lyon (France)
Roland Bacon, Ctr. de Recherche Astronomique de Lyon (France)
Oliver Le Fevre, Lab. d'Astrophysique de Marseille (France)

Published in SPIE Proceedings Vol. 4842:
Specialized Optical Developments in Astronomy
Eli Atad-Ettedgui; Sandro D'Odorico, Editor(s)

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